26339129221 has 36 divisors (see below), whose sum is σ = 28968212800. Its totient is φ = 23878305360.

The previous prime is 26339129189. The next prime is 26339129237. The reversal of 26339129221 is 12292193362.

It is not a de Polignac number, because 26339129221 - 2⁵ = 26339129189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26339123221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 333406660 + ... + 333406738.

Almost surely, 2^26339129221 is an apocalyptic number.

It is an amenable number.

26339129221 is a deficient number, since it is larger than the sum of its proper divisors (2629083579).

26339129221 is an frugal number, since it uses more digits than its factorization.

26339129221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 228 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The spelling of 26339129221 in words is "twenty-six billion, three hundred thirty-nine million, one hundred twenty-nine thousand, two hundred twenty-one".